The Polk County Medical Examiner's Office will perform an autopsy on the child's body to determine an official cause of death, he said.

While other people were in the barbershop while Williams was there, it appears they were not aware that a child had been left in Williams' car, Parizek said.

Business owners should contact their local county or municipal clerk for information about getting a business license.

Sunday on a felony charge of child endangerment resulting in death, according to online jail records. Based on interviews with Williams and witnesses, police believe Williams left his son in the car and went into the barbershop for an unknown "extended period of time."VIDEO: New carseat technology helps parents from leaving kids in hot cars Williams then returned to his car, found his son there and drove to the hospital, where the baby was determined to be dead, Parizek said. The heat index at the time of day the child was left in the car was about 95 degrees, Parizek said.Your business tax due date is the 15th day of the fourth month after your fiscal year ends.Please also note that you may also be subject to a separate business license registration and/or fee that is administered by the county and/or municipal clerk.Phone: Call the number on the back of your member ID card. Phone: Call toll-free: 1-800-721-0627 TTY users, call: 711 Hours: 7 a.m. CT, Monday – Friday Please contact United Healthcare by phone for all inquiries.Our Customer Service Advocates will answer your questions and give you helpful information.